The first known male of the whip spider Phrynus asperatipes (Wood) is described from two oases and other regions of Baja California Sur, México. It differs from the females as follows: males have the carapace (6.5–7.9 mm) and abdomen (11.0–12.4 mm) smaller than females. Also on an average, the femora (2.3 mm) and tibiae (7.2 mm) of the antenniform legs are shorter than in females.